Fire-extinguisher.



No; 858,381. PATENTED JULY 2, 1907.

I K, GRTINWALD.

,FIRE EXTINGUISHBR. APPLIOATION FILED NOV .6,1906. J

I Witnesses. l

' UNITED STATES PATENT OFFICE.

KARI GRU'NWALD, OF HAMBURG, GERMAN Y, ASSIGNOR TO THE FIRM OF PLUVIUSFEUER- LOSGI-IER GESELLSGHAFT MIT BESGHRANKTER HAFTUNG, OF HAMBURG,GERMANY;

FIRE-EXTINGUISHER.

Specification of Letters Patent.

Patented July 2, 1907.

Application filed November 6, 1906. Serial No. 342,239.

To all whom it may concern:

the Austrian Emperor, and a resident of Hamburg,

Germany, have invented certain new and useful Improvements inFire-Extinguishers, of which the following is a specification.

' The present invention relates to improvements in fire-extinguisherswherein the production of pressure in "a receptacle or casingcontaining, for example, water and bicarbonate of soda, is effected onthe fracture of a glass bottle filled with sulfuric acid, and whereinthe extinguishing fluid is forced out through an internal discharge pipeprovided with an external nozzle or mouth piece. In fire-extinguishersof this class the discharge pipe and the nozzle are generally arrangedso as to be easily removable from the receptacle, in order that the pipeand nozzle may be inspected and cleaned.

But the connection between the discharge pipe or sprinkler tube and thenozzle, and the attachment of the tube and the nozzle to or in theextinguisher casing is complicated.

In the present invention these complications are avoided, in that thedischarge pipe and nozzle are produced as a connected whole or entity.By loosening or 2 5' fastening a single securing member they can bereadily and rapidly removed, oragain restored to the position of use.

By constructing the discharge pipe and the nozzle so as to formpractically one single piece, it can be attached to the receptacle ofthe fire extinguisher by means of a suitable nut. This improvedconstruction or arrangement is particularly adapted for fireextinguishers the receptacles of which have a conical or fiat-conicalform, oval in cross-section.

In the accompanying sheet of drawings, Figure 1 is a vertical sectionshowing one embodiment of the invention; and Fig. 2 is a section onitheline A-B of Fig. 1. The receptacle d is preferably conical in form andoval in cross-section, as shown in Fig. 2, and has a coup- 40 ling-piecee provided with exterior screw-threads secured in the mouth thereof-byany well known means.

The discharge pipe consists of a length of tubing 0 provided at one endwith a mouth-piece 01' nozzle a and at its other end with a sieve b.This pipe is suspended in the receptacle by means of a flange a formedon the nozzle, and is adapted to close the mouth of the receptacle. Agas-tight connection with the coupling is ef-. fected by means of a nutj which is screwed onto the threads of the coupling, and suitablepacking rings or washers may be interposed between the top of thecoupling and the flange, as well as between the coupling and nut.

For securing and guiding the lower end of the slightly bent pipe 0 Iemploy a funnel-shaped guide sleeve 9 fitted near the bottom of thereceptacle d. It is evident that after removing the nutf the dischargepipe 0 with the nozzle a can at once be removed and cleaned apart fromthe receptacle, without discharging the contents of the latter orotherwise interfering with the extinguisher. The fitting and fasteningof the tubing 0 with the nozzle a can be effected simply and rapidly, asit is only necessaryto insert the tubing with the nozzle into thereceptacle and then screw on the nut.

For storing the chemicals, for instance, sulfuric acid, I employa bottleh'which is preferably fitted inasievelike cylinderlc mounted in abracketi. A lateral opening in the wall of the receptacle is providedfor the insertion of the bottle, whose bottom rests on a spike l in acrossbar of the bracket. The neck of the bottle projects into a cap mcarried by a spring-actuated spindle having pressure knob 07, andmovable in a screw-cap 0 which closes the opening in the wall of thecasing d.

The extinguisher is operated in the following manner: The receptaclebeing preferably provided with a handle, is held in one hand of theoperator while, by means of the other hand, pressure is exerted on theknob 11 and jams the bottle between the cap m and the fixed spike I,thus fracturing the bottle. The sulfuric acid contained therein mixeswith the carbonate solution and generates the carbonic acid gas,producing a sufiicient pressure to eject the contents from thereceptacle.

I claim A fire extinguisher, comprising a receptacle, a screwthreadedcoupling mounted in the mouth of said receptacle, a curveddischarge-pipe reaching from the bottom of the receptacle to the mouththereof, a sieve mounted in the receiving end of the pipe, a nozzle onthe dischargeend of said pipe, a flange on said nozzle adapted to beseated on the coupling, a nut surrounding the nozzle havingscrew-threads engaging the threads of the coupling, a funnel-shapedguide sleeve in the receptacle near the bottom thereof to receive thelower end of the discharge pipe, in combination with a bracket mountedwithin the receptacle near the bottom thereof, a perforated cylinderwithin the bracket, a bottle mounted in said cylinder, a spike engagingthe bottomof the bottle, a spring-actuated spindle, a cap carried by thelatter taking'over the neck of the said bottle and a screw-cap in whichthe spindle is movably mounted adapted to close an aperture in the sideof the receptacle.

KARL GRUNWALD.

Witnesses MAX A. G. LEMCKE, ERNEST H. L. MUMMENHOFF.

